diff --git a/src/x.c b/src/x.c
index fa003020..bcdb07ca 100644
--- a/src/x.c
+++ b/src/x.c
@@ -168,6 +168,8 @@ void x_con_kill(Con *con) {
     state = state_for_frame(con->frame);
     CIRCLEQ_REMOVE(&state_head, state, state);
     CIRCLEQ_REMOVE(&old_state_head, state, old_state);
+    FREE(state->name);
+    free(state);
 
     /* Invalidate focused_id to correctly focus new windows with the same ID */
     focused_id = XCB_NONE;